GGSGeoPluginManager Class Reference

Manager for geometry plugin. More...

#include <GGSGeoPluginManager.h>

Public Member Functions
	~GGSGeoPluginManager ()
	Destructor.
bool	LoadGeoPlugin (const std::string &libName)
	Loads the geometry plugin library. More...
GGSVGeometryConstruction *	GetGeoConstruction ()
	Returns the geometry construction object. More...

Static Public Member Functions
static GGSGeoPluginManager &	GetInstance ()
	Get the singleton instance. More...

Detailed Description

Manager for geometry plugin.

This singleton dynamically loads a GGS geometry contained in an in external dynamic library. Note that it will not build the geometry, but only create and return (via its GetGeoConstruction method) a GGSVGeometryConstruction object. To actually build the geometry, the user must call the Construct method of this object.

See Also

GGSVGeometryConstruction

Definition at line 30 of file GGSGeoPluginManager.h.

Member Function Documentation

GGSVGeometryConstruction* GGSGeoPluginManager::GetGeoConstruction ( )

inline

Returns the geometry construction object.

This method must be called ONLY AFTER a successful call to LoadGeoPlugin. To actually build the geometry, the user must call the Construct method of the returned object.

Returns

Pointer to the geometry construction object.

NULL if previous call to LoadGeoPlugin returned false or if LoadGeoPlugin has not been called at all.

Definition at line 63 of file GGSGeoPluginManager.h.

                                                 {
    if (_geoConstruction)
      return _geoConstruction;
    else
      return NULL;
  }

GGSGeoPluginManager & GGSGeoPluginManager::GetInstance ( )

static

Get the singleton instance.

Returns

Reference to the geometry plugin manager.

Definition at line 30 of file GGSGeoPluginManager.cpp.

                                                      {
  static GGSGeoPluginManager instance;
  return instance;
}

bool GGSGeoPluginManager::LoadGeoPlugin

(

const std::string &

libName

)

Loads the geometry plugin library.

This method opens the library and creates the GGSVGeometryConstruction object. Note that at this stage the geometry has still not been built, but any messenger built in GGSVGeometryConstruction constructor will be available to set geometry parameters before geometry construction.

Parameters

libName

Full path to the library file.

Returns

true if library has been opened and geometry construction object has been created, false otherwise.

Definition at line 46 of file GGSGeoPluginManager.cpp.

                                                                {

  static const std::string routineName("GGSGeoPluginManager::LoadGeoPlugin");

  // Clean any previously loaded geometry
  G4GeometryManager::GetInstance()->OpenGeometry();
  G4PhysicalVolumeStore::GetInstance()->Clean();
  G4LogicalVolumeStore::GetInstance()->Clean();
  G4SolidStore::GetInstance()->Clean();

  // Load the GGSGeometryConstruction library
  _ggsLibrary = dlopen(libName.c_str(), RTLD_LAZY);

  if (!_ggsLibrary) {
    COUT(ERROR) << "Cannot load library; " << dlerror() << ENDL;
    // Reset errors
    dlerror();
    return false;
  }

  // Reset errors
  dlerror();

  // Load the symbols
  GGSVGeometryConstruction* (*create_GGSGeometryConstruction)() = reinterpret_cast<GGSVGeometryConstruction* (*)()>(dlsym(_ggsLibrary, "GeometryBuilder"));
  const char* dlsym_error = dlerror();
  if (dlsym_error) {
    COUT(ERROR) << "Cannot load symbol create; " << dlsym_error << ENDL;
    dlclose(_ggsLibrary);
    _ggsLibrary = NULL;
    // Reset errors
    dlerror();
    return false;
  }

  _geoConstruction = create_GGSGeometryConstruction();

  if (_geoConstruction)
    return true;
  else
    return false;
}

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The documentation for this class was generated from the following files:

• GGSGeoPluginManager.h
• GGSGeoPluginManager.cpp